America’s Ports, Freight System Recognized in MAP-21 Surface Transportation Bill Reauthorization. With congressional passage today of MAP-21 (Moving Ahead for Progress in the 21st Century), the American Association of Port Authorities (AAPA) says elements in the two-year, $105 billion surface transportation reauthorization bill elevate the priority of freight movement in a way that constitutes major progress in recognizing the value of America’s seaports and freight network to the economy, jobs creation and business development.